3.5 Calculating Energy
Examples
Calculate the kinetic energy in each situation below:
Example #1:
 |
A 15000kg locomotive is moving at 20 m/s. What is its kinetic energy? Give it a try before looking at solution. |
Example #2:
 |
David is in training and doing sprints with a parachute. David and the parachute (together) have a mass of 75 kg and are travelling at 6.0 m/s. What is the kinetic energy of the combo? Give it a try before looking at the solution. |
Example #3:
 |
Val releases a 50 gram bearing from her sling shot at 18 m/s. What is the kinetic energy of the bearing? Give it a try before looking at the solution. |
Example #4:
 |
A 0.25 kg pendulum is swinging. At the very top of its swing, it has no velocity (comes to a stop). At the bottom of its swing, it has a velocity of 5.0 m/s. What is the kinetic energy in each position? Give it a try before looking at the solution. |
